Grate for water-gas and other apparatus.



I. N. KNAPP. GRATE FOR WATER GAS AND OTHER APPARATUS.

APPLICATION FIL'ED 330.12. 1907.

Patented May 9, 1911.

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UNITE STA ISAAC N. KNAPP, OF ARDMORE, PENNSYLVANIA, ASSIGNOR TO THEUNITED GAS IMPROVEMENT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA.

GRATE FOR WATER-GAS AND OTHER APPARATUS.

Specification of Letters Patent.

Patented May 9, 1911.

Application filed December 12, 1907. Serial No. 406,142.

To all whom it may concem:

Be it known that I, ISAAC N. KNAPP, a citizen of the United States, andresident of Ardmore, in the county of Montgomery and State ofPennsylvania, have invented certain new and useful Improvements inGrates for Water-Gas and other Apparatus, of which the following is aspecification.

Objects of the present invention are to continuously subject theparticles of fuel of the fire to a gentle movement, thus not onlyfreeing their surfaces from ash and exposing them advantageously to thesteam and air which are passed through the fire, but also preventingundue collection of clinkers; to provide notonly for the continuousremoval from the fire to the ash-pit of ashes and clinkers, but also forthe intermittent removal of an accumulation thereof; to impart to anon-rotating grate a rocking motion which will swing successive portionsof its rim into elevated position thereby causing it to operate toproduce and maintain a good fire not only for gas making, but also forother purposes; to provide for raising and lowering such a grate whilein motion for the purpose of removing ashes and clinker from the fire,and to provide simple, reliable and efficient mechanism by which thegrate is rocked and raised and lowered from beneath and in the mannermentioned.

One embodiment of the invention is shown, principally in centralsection, in the accompanying drawing.

In the drawing 1, is the combustion chamber of the generator and 2, isthe ash-pit. These are usually circular in cross-section and betweenthem is interposed a water cooled metallic ring 3.

4, are openings for the removal of ashes.

Within the ash pit there is arranged a suitable pedestal 5, which isprovided with an inclined housing 6, upon which the ashes fall and bywhich they are directed through the openings 4, at such times as may benecessary and in a manner that will be presently described. At the baseof the pedestal there is arranged a jack screw 7 which may be raised andlowered as by means of a worm-wheel 8 and worm 9, which can be operatedfrom the exterior of the generator, although it is not necessary to showmeans for this stood.

Arranged vertically in the pedestal is a revoluble shaft 10. It has astep bearing upon the jack screw 7 and is shown as mounted upon an endthrust roller bearing 11. At its upper end the shaft 10 has in thepedestal a bearing 12, shown as of the roller variety and it carries twobearings 13 and 14, shown as of the roller variety. These bearings 13and 14, are arranged to revolubly support a short shaft or spud 15, withits axis at an inclination to the axis of the shaft 10. The inclinationof the two shafts is such that their axes, if prolonged, would coincideat substantially the center of the circular base of the grate 16. Thelatter is shown to comprise a circular spider consist-- ing of a centralportion 17 and a ring portion 18 with radial arms 19, extending betweenthem.

20, are provisions for water cooling the grate and 21, are reticulatedor perforated plates carried by the spider and the openings in them neednot be large enough to permit-of the passage of ashes, as they areprimarily intended to serve for the passage of air and, in the presentinstance, steam. The spider is mounted upon the shaft 15. A thrustbearing 22 is interposed between the bottom of a collar on the spud 15,and the top of the revolving shaft 10. Between the central portion 17,and the top part of the revoluble shaft 10, is arranged a dust guardshown to comprise a flange projecting inward into an appropriate groovein the top of the part 10, so that the part 10, is free to turn, theflange sliding in the groove for this purpose.

With the parts in "the position shown, the shaft 10, is revolved, forexample, by means of the work 23 and worm wheel 24, which is revolublein the pedestal and is splined or otherwise secured to the shaft in sucha way that the latter must turn with it and is capable of end-wisemotion. The revolution of the shaft 10, causes the lower end of the spud15, and the central part of the top of the grate to describe circleshaving the axis of the shaft 10 as their centers. However, the grate isheld against rotary movement and yet is free to be raised and purpose,as they will be well underlowered. To accomplish this, use is made of apost 25, rising from a girder 26, spanning the ash pit and connectedwith its circular wall and of a collar 27, movably encircling the postand connected with one of the arms 19 of the spider. Under theseconditions the grate is continuously rocked and succeeding portions ofits rim are swung into elevated position.

The positions of the grate and ring 3 on the generator, may be such thatashes continuously or intermittently escape, but proceeding in a circle,successive portions of the the are gradually raised and lowered so thatashes are shaken from the particles of fuel and the collection ofclinker is obviated. To additionally discharge clinker or ashes, thedescribed motions of the grate are permitted to continue, but it islowered by means of the jack screw 7, into such position that the spacebetween the rim of the grate and the ring 3, is suiiiciently wide topermit ashes to fall through and reach the housing 6, from which theyare discharged through the openings l.

lVhat- I claim is:

1. A. non-rotatable grate having a jointed support carrying it frombeneath and provided with means for continuously rocking it and swingingsucceeding portions of its rim into and out of elevated position, substantially as described.

2. A non-rotating grate having a jointed support carrying it frombeneath and provided with means for continuously rocking it and swingingsucceeding portions of its rim into and out of elevated position, incombination with devices for raising and lowering the support,substantially as described.

3. The combination of a gas generator having a combustion chamber, anon-rotatable grate in said combustion chamber, said grate having ajointed support carrying it from beneath and provided with means forcontinuously rocking it and swinging succeeding portions of its rim intoand out of elevated position, substantially as described.

4. The combination of a gas generator having a combustion chamber, anon-rotatable grate in said combustion chamber, said grate having ajointed support carrying it from beneath and provided with means forcontinuously rocking it and swinging succeeding portions of its rim intoand out of elevated position, and a water cooled ring operativelyarranged around the rim of the grate, substantially as described.

5. The combination of a gas generator having a combustion chamber, anon-rotatable grate in said combustion chamber, said grate having ajointed support carrying it from beneath and provided with means forcontinuously rocking it and swinging succeeding portions of its rim intoand out of elevated position, and devices for raising and lowering thesupport, substantially as described.

(3. The combination of a gas generator having a combustion chamber, anon-rotatable grate in said combustion chamber, said grate having ajointed support carrying it from beneath and provided with means forcontinuously rocking it and swinging succeeding portions of its rim intoand out of elevated position, with devices for raising and lowering thesupport and with a water cooled, ring operatively arranged around therim of the grate, substantially as described.

7. The combination of an upright revo' luble shaft, means for rotatingthe shaft, a spud arranged at an inclination to said shaft and revolublymounted at its upper end, a grate supported upon said spud, and meansfor preventing rotation of the grate when its support is rotated,substantially as de' scribed.

8. The combination of an upright revoluble shaft, means for rotating theshaft, a spud arranged at an inclination to said shaft and revolublymounted at its upper end, a grate supported upon said spud, means forpreventing rotation of the grate when its support is rotated, anddevices for raising and lowering said shaft and connected parts,substantially as described.

9. The combination of a gas generator having a combustion chamberprovided with an ash discharge opening, an upright revoluble shaftarranged beneath the opening, means for rotating the shaft, a spud arranged at an inclination to said shaft and revolubly mounted at itsupper end, a grate supported upon said spud, and means for preventingrotation of the grate when its support is rotated, the rim of the ashdischarge opening being operatively arranged in respect to the rim ofthe grate, substantially as described.

10. The combination of a gas generator having a combustion chamberprovided with an ash discharge opening, an upright revoluble shaftarranged beneath the opening, means for rotating the shaft, a spud'arranged at an inclination to said shaft and revolubly mounted at itsupper end, a grate supported upon said spud, means for pre ventingrotation of the grate when its support is rotated, and devices forraising and lowering said shaft and connected parts, the rim of the ashdischarge opening being operatively arranged in respect to the rim 0 thegrate, substantially as described.

11. The combination of the generator having combustion and ash chambers,the latter provided in its wall with ash discharge openings, a pedestalarranged in the ash chamber and having a housing for delivering ashesthrough said openings, a lifting jack arranged in said pedestal, anupright shaft carried by the jack and revolubly mounted in the pedestal,means in the pedestal for rotating said shaft and permitting it to beraised and lowered by the jack, a spud rotatably carried by said shaftand inclined in respect to the axis thereof, a grate rotatably connectedwith the spud, and means for preventing rotation of the grate when itssupport is rotated,

said grate disposed in the gas generator be- 10 signed my name.

ISAAC N. KNAPP. Witnesses:

F. H. MAoMoRRIs, F B. RANKIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

